Set a reasonable icon for the media galleries scan result dialog folder viewer.

chrome/app/theme/theme_resources.grd

 <?xml version="1.0" encoding="utf-8"?>
 <!-- This grd file contains images that are pre-scaled for device scale
      factors. The image returned by |base::ResourceBundle::GetImageNamed|
      will contain multiple |gfx:ImageSkiaReps| for each scale factors. The
      |fallback_to_low_resolution| attribute controls behavior when
      an image file is missing for target scale factor. If true, chrome
      will automatically scale the 1x image to the target scale factor.
      If false, build will fail due to missing resources. This is
      currently set to true for all resources, but the default will
      become false in near future.
@@ skipping 214 matching lines @@
       <structure type="chrome_scaled_image" name="IDR_EXTENSIONS_SECTION" file="extensions_section.png" />
       <structure type="chrome_scaled_image" name="IDR_EXTENSION_COMMAND_CLOSE" file="extension_command_close.png" />
       <structure type="chrome_scaled_image" name="IDR_EXTENSION_DEFAULT_ICON" file="extension_default_icon.png" />
       <if expr="pp_ifdef('chromeos')">
         <structure type="chrome_scaled_image" name="IDR_FATAL_ERROR" file="cros/fatal_error.png" />
       </if>
       <structure type="chrome_scaled_image" name="IDR_FEEDBACK" file="feedback.png" />
       <structure type="chrome_scaled_image" name="IDR_FEEDBACK_H" file="feedback_hover.png" />
       <structure type="chrome_scaled_image" name="IDR_FEEDBACK_P" file="feedback_pressed.png" />
 
+      <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_FOLDER" file="common/folder.png" />

[oshima, 2014/02/07 20:12:55]

I actually wonder if this (and some of files in cros/file_types) are really used
in filemanager.

(https://code.google.com/p/chromium/codesearch#search/&q=IDR_FILE_MANAGER_IMG_...)

yoshiki, do you know if we need them all?

[vandebo (ex-Chrome), 2014/02/08 00:47:44]

That sound out of scope for this CL.  Maybe yoshiki can do a follow up CL?

[yoshiki, 2014/02/12 12:24:09]

This had been used by Files.app but doesn't use now. You can move the file
or/and rename the ID if you want. 

       <if expr="pp_ifdef('chromeos')">
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_ARCHIVE" file="cros/file_types/archive.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_AUDIO" file="cros/file_types/audio.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_DRIVE" file="cros/file_types/drive.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_EXCEL" file="cros/file_types/excel.png" />
-        <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_FOLDER" file="cros/file_types/folder.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_FORM" file="cros/file_types/form.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_GDOC" file="cros/file_types/gdoc.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_GDRAW" file="cros/file_types/gdraw.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_GENERIC" file="cros/file_types/generic.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_GLINK" file="cros/file_types/glink.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_GSHEET" file="cros/file_types/gsheet.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_GSLIDES" file="cros/file_types/gslides.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_GTABLE" file="cros/file_types/gtable.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_IMAGE" file="cros/file_types/image.png" />
         <structure type="chrome_scaled_image" name="IDR_FILE_MANAGER_IMG_FILETYPE_PDF" file="cros/file_types/pdf.png" />
@@ skipping 882 matching lines @@
       <structure type="chrome_scaled_image" name="IDR_PEOPLE_SEARCH_ACTION_EMAIL" file="common/mail.png" />
       <structure type="chrome_scaled_image" name="IDR_PEOPLE_SEARCH_ACTION_EMAIL_HOVER" file="common/mail_hover.png" />
       <structure type="chrome_scaled_image" name="IDR_PEOPLE_SEARCH_ACTION_EMAIL_PRESSED" file="common/mail_pressed.png" />
       <structure type="chrome_scaled_image" name="IDR_PEOPLE_SEARCH_ACTION_CHAT" file="common/chat.png" />
       <structure type="chrome_scaled_image" name="IDR_PEOPLE_SEARCH_ACTION_CHAT_HOVER" file="common/chat_hover.png" />
       <structure type="chrome_scaled_image" name="IDR_PEOPLE_SEARCH_ACTION_CHAT_PRESSED" file="common/chat_pressed.png" />
 
     </structures>
   </release>
 </grit>